1200 points vs. Tau

Ok, in my other post in the main space marines section titled 'to prevent the expansion' I've been throwing some ideas around of how to play against the Tau and I've come up with this list.
Feel free to state what you think could be an improvement.

(By the way, I know my elite choices aren't the greatest against tau, but they can be fun to use and otherwise I won't meet the points requirement)

Use a librarian instead of the captain and go for the leadership based powers. Tau rarely exceed ld 8. Throw your power fist sergeant in the drop pod, that squad has the best odds of charging something. When using the termie drop pod, try to avoid crisis suits. If you go for the crisis suits its a tough, but potentially rewarding fight, if you don't it's easy points. Go for the bird in the hand and leave those others in the bush. I like the dread, he can double as an emergency railhead killer with his assault cannon, but the same advice for the termies goes for him, if you focus on the weaker firewarriors, vespid, and kroot, the army falls apart faster. If you can scrape up any more marines that would really help, but what you have doesn't look terrible.

EDIT:
Fury of the Ancients and Fear of the darkness (sry, I'm senile), but anyways, when used in conjuction these preform pretty well. When at a distance you use FoA and go through as many squads as possible and try to pin them. Up close, use FotD to make them run off the board. If he has an ethereal this could be problematic, but if your list of what he has is accurate, the only one he's got is Aun'Va who can't be used unless the game is at least 1500 pts.

Your tac squads each have a str8 weapon, good against suits, my concern would be their small size.

The devestator squad I like. You dont have to down a hammerhead in one go just stun/shake it and finish it the next turn.

The dreadnaught worries me. Thats a lot of points to send against guys with str10 weapons. But it could also win the game, what the hell go for it.

I think you have 3 more marines with boltguns right? And one with a hvy bolter?
I'd drop the pod from the second tactical squad and buy 3 more marines, giving one a hvy bolter. Re-arrange and put the hvy bolter and plasma gun together(will outshoot firewarriors) as fire support and 2 squads with melta-guns and powerweapons(vet sarg and commander) to take suits. Deep striking Termies and Dread should be enough at 1200 pts.

So re-cap, Devs pin/destroy hammerhead, whirlwind kills his troops, 2 tact squads are equiped to take out suits and 1 tact squad to outshoot his firewarriors.

I think you have done well with the figures you have, i think he has more to worry about than you. 2 weeks ago I won a 1200pt and 1500pt battle against different Tau players and won both using similar forces. Good luck I think you'll do well...